应用程序已成功部署在Tomcat上，但出现404错误 [英] Application successfully deployed on Tomcat, but 404 error

问题描述

经过一番努力，我已经在(远程)Tomcat 5.5服务器(Turnkey Linux随附)上部署了一个Web应用程序.这是一个带有Java后端的GoogleWebToolkit网络应用.

I've deployed, after some struggle, a web-app on a (remote) Tomcat 5.5 server (Turnkey Linux comes with that). It is a GoogleWebToolkit web-app with a Java backend.

观察日志，一切正常./manager应用程序还在我的新应用程序上显示"running = true".

Observing the logs everything went fine. The /manager app also shows 'running=true' on my new app.

但是问题是，转到/myApp网址会显示404.到目前为止，我所做的没有成功:

But the problem is, going to the /myApp url gives 404. What I've done so far, to no success:

• 确保它确实是使用Eclipse在本地运行的，在那可以正常工作
• 检查了部署服务器上的日志，它成功加载了Spring和其他一些库.实际上，它显示的消息与我在Eclipse中以托管模式运行它时所显示的消息相同.
• /manager，/host-manager，/admin应用程序运行正常.
• 在/manager上重新加载应用程序也显示确定"
• 我指定了一个欢迎文件，该文件实际上在那儿，直接点击该文件还会显示404
• 我使用默认主机("localhost")，就像/manager，/host-manager和/admin应用一样
• 在互联网上进行了大量搜索，无济于事.
• 尝试使用另一台Tomcat(v6)服务器(我的家用ubuntu盒，我要部署的服务器是网络上的某个VPS)，并且该服务器可以正常工作...重新安装VPS?

关于如何解决此问题的任何提示，找出问题所在或可能导致此问题的原因?会有冲突吗?$ CATALINA_HOME/webapps目录中有另一个应用程序正在运行，是否可以与部署在同一目录中的myApp冲突?

Any hints on how to fix this, find out what the problem is, or what might cause this? Can there be conflicts? there is another app running in the $CATALINA_HOME/webapps dir, can that conflict with myApp, which is in the same directory deployed?

下面是我的server.xml

Below is my server.xml

<?xml version="1.0" encoding="UTF-8"?>
<Server>
  <Listener className="org.apache.catalina.core.AprLifecycleListener"/>
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
  <Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/>
  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
  <GlobalNamingResources>
   <Environment
    name="simpleValue"
    type="java.lang.Integer"
    value="30"/>
   <Resource
     auth="Container"
     description="User database that can be updated and saved"
     name="UserDatabase"
     type="org.apache.catalina.UserDatabase"
     pathname="conf/tomcat-users.xml"
     factory="org.apache.catalina.users.MemoryUserDatabaseFactory"/>
  </GlobalNamingResources>
  <Service
  name="Catalina">
   <Connector
    port="8009"
    redirectPort="8443"
    address="127.0.0.1"
    protocol="AJP/1.3">
   </Connector>
   <Engine
    defaultHost="localhost"
    name="Catalina">
     <Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
     <Host
      appBase="webapps"
      name="localhost">
     </Host>
   </Engine>
 </Service>
</Server>

推荐答案

因此，您有一个位于Tomcat前面的Apache实例.对Apache的一些/所有请求都转发到Tomcat AJP端口8009.假设此Apache-Tomcat桥正常运行，因此仅关注已部署的应用程序，则可能需要在Apache的应用程序中添加一些 JKMount 指令. httpd.conf 文件，以确保确实将对/myApp url的请求转发给Tomcat.否则，它们将由Apache提供服务，这意味着当找不到这些资源时，您会收到404错误.

So you have an Apache instance sitting in front of Tomcat. Some/all requests to Apache are forwarded to Tomcat AJP port 8009. Assuming this Apache-Tomcat bridge is working ok, and thus focusing only on your deployed application, you probably need to add some JKMount directives into Apache's httpd.conf file, to ensure that requests to /myApp url are indeed forwarded to Tomcat. Otherwise, they are served by Apache, which means that you get a 404 error when those resources are not found.

这篇关于应用程序已成功部署在Tomcat上，但出现404错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！